bug: enterprise connector OIDC Issuer error

[sailwebs]

Describe the bug

• pnpm dev
• addd enterprise connector with OIDC
• set the Issuer and save the changes
• an error occurred,

  
  request: /api/sso-connectors/51jtjaelkpu3
  response: 
  {
  "message": "The connector's config is invalid.",
  "code": "connector.invalid_config",
  "data": {
      "ssoErrorCode": "invalid_config",
      "config": {
          ...
      },
      "message": "fail_to_fetch_config",
      "error": "406: Not Acceptable\n\nAvailable representations: "
  }
  }

### Possible Causes
I change the code in this way, it will run correctly. 

packages/core/src/sso/OidcConnector/utils.ts
![image](https://github.com/logto-io/logto/assets/804734/3c49d4d0-9829-4326-a96a-f6ba359e1b4a)

const { body } = await got.get(`${issuer}/.well-known/openid-configuration`);
const result = oidcConfigResponseGuard.safeParse(parseJson(body));

[xiaoyijun]

@darcyYe Could you please confirm this issue when you have time?

[darcyYe]

Hi @sailwebs, thanks for letting us know about this issue. I'm wondering which IdP you are using? This could help us know whether this is a general or edge case.

[sailwebs]

Hi @sailwebs, thanks for letting us know about this issue. I'm wondering which IdP you are using? This could help us know whether this is a general or edge case.

I used kubesphere, which can reproduce this scene.

https://kubesphere.io/

[sailwebs]

According to the code in my screenshot, it can run normally

[darcyYe]

Thanks for your reporting, will make the OIDC connector compatible for different response types.